From: Johannes Berg <johannes.berg@xxxxxxxxx>
This is needed now for some wireless drivers.
Simply copy the upstream implementation.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
--- a/include/linux/compat-3.2.h
+++ b/include/linux/compat-3.2.h
@@ -10,6 +10,15 @@
#define PMSG_IS_AUTO(msg) (((msg).event & PM_EVENT_AUTO) != 0)
+static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag)
+{
+ void *ret = dma_alloc_coherent(dev, size, dma_handle, flag);
+ if (ret)
+ memset(ret, 0, size);
+ return ret;
+}
+
/**
* skb_frag_page - retrieve the page refered to by a paged fragment
* @frag: the paged fragment
--
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